Finding the Fourth Proportional to 1,563.72, 2,160.56 and 1,234.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.72 : 2,160.56 = 1,234.68 : x
2. Step 2: Convert to fraction form
   1,563.72/2,160.56 = 1,234.68/x
3. Step 3: Cross multiply
   1,563.72x = 2,160.56 × 1,234.68
4. Step 4: Simplify right side
   1,563.72x = 2,667,600.22
5. Step 5: Solve for x
   x = 2,667,600.22/1,563.72
6. Step 6: Final answer
   x = 1,705.93